'\" t
.\"     Title: clk_get_sys
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Clock Framework
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "CLK_GET_SYS" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Clock Framework"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
clk_get_sys \- get a clock based upon the device name
.SH "SYNOPSIS"
.HP \w'struct\ clk\ *\ clk_get_sys('u
.BI "struct clk * clk_get_sys(const\ char\ *\ " "dev_id" ", const\ char\ *\ " "con_id" ");"
.SH "ARGUMENTS"
.PP
\fIdev_id\fR
.RS 4
device name
.RE
.PP
\fIcon_id\fR
.RS 4
connection ID
.RE
.SH "DESCRIPTION"
.PP
Returns a struct clk corresponding to the clock producer, or valid
\fBIS_ERR\fR
condition containing errno\&. The implementation uses
\fIdev_id\fR
and
\fIcon_id\fR
to determine the clock consumer, and thereby the clock producer\&. In contrast to
\fBclk_get\fR
this function takes the device name instead of the device itself for identification\&.
.PP
Drivers must assume that the clock source is not enabled\&.
.PP
clk_get_sys should not be called from within interrupt context\&.
.SH "COPYRIGHT"
.br